1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 28*0Sstevel@tonic-gate 29*0Sstevel@tonic-gate /* 30*0Sstevel@tonic-gate * Sysevent Driver for GPEC 31*0Sstevel@tonic-gate */ 32*0Sstevel@tonic-gate 33*0Sstevel@tonic-gate #include <sys/types.h> 34*0Sstevel@tonic-gate #include <sys/param.h> 35*0Sstevel@tonic-gate #include <sys/cred.h> 36*0Sstevel@tonic-gate #include <sys/file.h> 37*0Sstevel@tonic-gate #include <sys/stat.h> 38*0Sstevel@tonic-gate #include <sys/conf.h> 39*0Sstevel@tonic-gate #include <sys/ddi.h> 40*0Sstevel@tonic-gate #include <sys/sunddi.h> 41*0Sstevel@tonic-gate #include <sys/modctl.h> 42*0Sstevel@tonic-gate #include <sys/open.h> /* OTYP_CHR definition */ 43*0Sstevel@tonic-gate #include <sys/sysmacros.h> /* L_BITSMINOR definition */ 44*0Sstevel@tonic-gate #include <sys/bitmap.h> 45*0Sstevel@tonic-gate #include <sys/sysevent.h> 46*0Sstevel@tonic-gate #include <sys/sysevent_impl.h> 47*0Sstevel@tonic-gate 48*0Sstevel@tonic-gate static dev_info_t *sysevent_devi; 49*0Sstevel@tonic-gate 50*0Sstevel@tonic-gate /* Definitions for binding handle array */ 51*0Sstevel@tonic-gate static ulong_t sysevent_bitmap_initial = 1; /* index 0 indicates error */ 52*0Sstevel@tonic-gate static ulong_t *sysevent_minor_bitmap = &sysevent_bitmap_initial; 53*0Sstevel@tonic-gate static size_t sysevent_minor_bits = BT_NBIPUL; 54*0Sstevel@tonic-gate static kmutex_t sysevent_minor_mutex; 55*0Sstevel@tonic-gate 56*0Sstevel@tonic-gate /* 57*0Sstevel@tonic-gate * evchan_ctl acts as a container for the binding handle 58*0Sstevel@tonic-gate */ 59*0Sstevel@tonic-gate typedef struct evchan_ctl { 60*0Sstevel@tonic-gate evchan_t *chp; 61*0Sstevel@tonic-gate } evchan_ctl_t; 62*0Sstevel@tonic-gate 63*0Sstevel@tonic-gate static void *evchan_ctlp; 64*0Sstevel@tonic-gate 65*0Sstevel@tonic-gate /* 66*0Sstevel@tonic-gate * Check if it's a null terminated array - to avoid DoS attack 67*0Sstevel@tonic-gate * It is supposed that string points to an array with 68*0Sstevel@tonic-gate * a minimum length of len. len must be strlen + 1. 69*0Sstevel@tonic-gate * Checks for printable characters are already done in library. 70*0Sstevel@tonic-gate */ 71*0Sstevel@tonic-gate static int 72*0Sstevel@tonic-gate sysevent_isstrend(char *string, size_t len) 73*0Sstevel@tonic-gate { 74*0Sstevel@tonic-gate /* Return 0 if string has length of zero */ 75*0Sstevel@tonic-gate if (len > 0) { 76*0Sstevel@tonic-gate return (string[len - 1] == '\0' ? 1 : 0); 77*0Sstevel@tonic-gate } else { 78*0Sstevel@tonic-gate return (0); 79*0Sstevel@tonic-gate } 80*0Sstevel@tonic-gate } 81*0Sstevel@tonic-gate 82*0Sstevel@tonic-gate /* 83*0Sstevel@tonic-gate * Following sysevent_minor_* routines map 84*0Sstevel@tonic-gate * a binding handle (evchan_t *) to a minor number 85*0Sstevel@tonic-gate * Has to be called w/ locks held. 86*0Sstevel@tonic-gate */ 87*0Sstevel@tonic-gate static ulong_t * 88*0Sstevel@tonic-gate sysevent_minor_alloc(void) 89*0Sstevel@tonic-gate { 90*0Sstevel@tonic-gate ulong_t *bhst = sysevent_minor_bitmap; 91*0Sstevel@tonic-gate 92*0Sstevel@tonic-gate /* Increase bitmap by one BT_NBIPUL */ 93*0Sstevel@tonic-gate if (sysevent_minor_bits + BT_NBIPUL > SYSEVENT_MINOR_MAX) { 94*0Sstevel@tonic-gate return ((ulong_t *)NULL); 95*0Sstevel@tonic-gate } 96*0Sstevel@tonic-gate sysevent_minor_bitmap = kmem_zalloc( 97*0Sstevel@tonic-gate BT_SIZEOFMAP(sysevent_minor_bits + BT_NBIPUL), KM_SLEEP); 98*0Sstevel@tonic-gate bcopy(bhst, sysevent_minor_bitmap, BT_SIZEOFMAP(sysevent_minor_bits)); 99*0Sstevel@tonic-gate if (bhst != &sysevent_bitmap_initial) 100*0Sstevel@tonic-gate kmem_free(bhst, BT_SIZEOFMAP(sysevent_minor_bits)); 101*0Sstevel@tonic-gate sysevent_minor_bits += BT_NBIPUL; 102*0Sstevel@tonic-gate 103*0Sstevel@tonic-gate return (sysevent_minor_bitmap); 104*0Sstevel@tonic-gate } 105*0Sstevel@tonic-gate 106*0Sstevel@tonic-gate static void 107*0Sstevel@tonic-gate sysevent_minor_free(ulong_t *bitmap) 108*0Sstevel@tonic-gate { 109*0Sstevel@tonic-gate if (bitmap != &sysevent_bitmap_initial) 110*0Sstevel@tonic-gate kmem_free(bitmap, BT_SIZEOFMAP(sysevent_minor_bits)); 111*0Sstevel@tonic-gate } 112*0Sstevel@tonic-gate 113*0Sstevel@tonic-gate static index_t 114*0Sstevel@tonic-gate sysevent_minor_get(void) 115*0Sstevel@tonic-gate { 116*0Sstevel@tonic-gate index_t idx; 117*0Sstevel@tonic-gate ulong_t *bhst; 118*0Sstevel@tonic-gate 119*0Sstevel@tonic-gate /* Search for an available index */ 120*0Sstevel@tonic-gate mutex_enter(&sysevent_minor_mutex); 121*0Sstevel@tonic-gate if ((idx = bt_availbit(sysevent_minor_bitmap, 122*0Sstevel@tonic-gate sysevent_minor_bits)) == -1) { 123*0Sstevel@tonic-gate /* All busy - allocate additional binding handle bitmap space */ 124*0Sstevel@tonic-gate if ((bhst = sysevent_minor_alloc()) == NULL) { 125*0Sstevel@tonic-gate /* Reached our maximum of id's == SHRT_MAX */ 126*0Sstevel@tonic-gate mutex_exit(&sysevent_minor_mutex); 127*0Sstevel@tonic-gate return (0); 128*0Sstevel@tonic-gate } else { 129*0Sstevel@tonic-gate sysevent_minor_bitmap = bhst; 130*0Sstevel@tonic-gate } 131*0Sstevel@tonic-gate idx = bt_availbit(sysevent_minor_bitmap, sysevent_minor_bits); 132*0Sstevel@tonic-gate } 133*0Sstevel@tonic-gate BT_SET(sysevent_minor_bitmap, idx); 134*0Sstevel@tonic-gate mutex_exit(&sysevent_minor_mutex); 135*0Sstevel@tonic-gate return (idx); 136*0Sstevel@tonic-gate } 137*0Sstevel@tonic-gate 138*0Sstevel@tonic-gate static void 139*0Sstevel@tonic-gate sysevent_minor_rele(index_t idx) 140*0Sstevel@tonic-gate { 141*0Sstevel@tonic-gate mutex_enter(&sysevent_minor_mutex); 142*0Sstevel@tonic-gate ASSERT(BT_TEST(sysevent_minor_bitmap, idx) == 1); 143*0Sstevel@tonic-gate BT_CLEAR(sysevent_minor_bitmap, idx); 144*0Sstevel@tonic-gate mutex_exit(&sysevent_minor_mutex); 145*0Sstevel@tonic-gate } 146*0Sstevel@tonic-gate 147*0Sstevel@tonic-gate static void 148*0Sstevel@tonic-gate sysevent_minor_init(void) 149*0Sstevel@tonic-gate { 150*0Sstevel@tonic-gate mutex_init(&sysevent_minor_mutex, NULL, MUTEX_DEFAULT, NULL); 151*0Sstevel@tonic-gate } 152*0Sstevel@tonic-gate 153*0Sstevel@tonic-gate /* ARGSUSED */ 154*0Sstevel@tonic-gate static int 155*0Sstevel@tonic-gate sysevent_publish(dev_t dev, int *rvalp, void *arg, int flag, cred_t *cr) 156*0Sstevel@tonic-gate { 157*0Sstevel@tonic-gate int km_flags; 158*0Sstevel@tonic-gate sev_publish_args_t uargs; 159*0Sstevel@tonic-gate sysevent_impl_t *ev; 160*0Sstevel@tonic-gate evchan_ctl_t *ctl; 161*0Sstevel@tonic-gate 162*0Sstevel@tonic-gate ctl = ddi_get_soft_state(evchan_ctlp, getminor(dev)); 163*0Sstevel@tonic-gate if (ctl == NULL || ctl->chp == NULL) 164*0Sstevel@tonic-gate return (ENXIO); 165*0Sstevel@tonic-gate 166*0Sstevel@tonic-gate if (copyin(arg, &uargs, sizeof (sev_publish_args_t)) != 0) 167*0Sstevel@tonic-gate return (EFAULT); 168*0Sstevel@tonic-gate 169*0Sstevel@tonic-gate /* 170*0Sstevel@tonic-gate * This limits the size of an event 171*0Sstevel@tonic-gate */ 172*0Sstevel@tonic-gate if (uargs.ev.len > MAX_EV_SIZE_LEN) 173*0Sstevel@tonic-gate return (EOVERFLOW); 174*0Sstevel@tonic-gate 175*0Sstevel@tonic-gate /* 176*0Sstevel@tonic-gate * Check for valid uargs.flags 177*0Sstevel@tonic-gate */ 178*0Sstevel@tonic-gate if (uargs.flags & ~(EVCH_NOSLEEP | EVCH_SLEEP | EVCH_QWAIT)) 179*0Sstevel@tonic-gate return (EINVAL); 180*0Sstevel@tonic-gate 181*0Sstevel@tonic-gate /* 182*0Sstevel@tonic-gate * Check that at least one of EVCH_NOSLEEP or EVCH_SLEEP is 183*0Sstevel@tonic-gate * specified 184*0Sstevel@tonic-gate */ 185*0Sstevel@tonic-gate km_flags = uargs.flags & (EVCH_NOSLEEP | EVCH_SLEEP); 186*0Sstevel@tonic-gate if (km_flags != EVCH_NOSLEEP && km_flags != EVCH_SLEEP) 187*0Sstevel@tonic-gate return (EINVAL); 188*0Sstevel@tonic-gate 189*0Sstevel@tonic-gate ev = evch_usrallocev(uargs.ev.len, uargs.flags); 190*0Sstevel@tonic-gate 191*0Sstevel@tonic-gate if (copyin((void *)(uintptr_t)uargs.ev.name, ev, uargs.ev.len) != 0) { 192*0Sstevel@tonic-gate evch_usrfreeev(ev); 193*0Sstevel@tonic-gate return (EFAULT); 194*0Sstevel@tonic-gate } 195*0Sstevel@tonic-gate 196*0Sstevel@tonic-gate return (evch_usrpostevent(ctl->chp, ev, uargs.flags)); 197*0Sstevel@tonic-gate 198*0Sstevel@tonic-gate /* Event will be freed internally */ 199*0Sstevel@tonic-gate } 200*0Sstevel@tonic-gate 201*0Sstevel@tonic-gate /* 202*0Sstevel@tonic-gate * sysevent_chan_open - used to open a channel in the GPEC channel layer 203*0Sstevel@tonic-gate */ 204*0Sstevel@tonic-gate 205*0Sstevel@tonic-gate /* ARGSUSED */ 206*0Sstevel@tonic-gate static int 207*0Sstevel@tonic-gate sysevent_chan_open(dev_t dev, int *rvalp, void *arg, int flag, cred_t *cr) 208*0Sstevel@tonic-gate { 209*0Sstevel@tonic-gate sev_bind_args_t uargs; 210*0Sstevel@tonic-gate evchan_ctl_t *ctl; 211*0Sstevel@tonic-gate char *chan_name; 212*0Sstevel@tonic-gate int ec; 213*0Sstevel@tonic-gate 214*0Sstevel@tonic-gate ctl = ddi_get_soft_state(evchan_ctlp, getminor(dev)); 215*0Sstevel@tonic-gate if (ctl == NULL) { 216*0Sstevel@tonic-gate return (ENXIO); 217*0Sstevel@tonic-gate } 218*0Sstevel@tonic-gate 219*0Sstevel@tonic-gate if (copyin(arg, &uargs, sizeof (sev_bind_args_t)) != 0) 220*0Sstevel@tonic-gate return (EFAULT); 221*0Sstevel@tonic-gate 222*0Sstevel@tonic-gate if (uargs.chan_name.len > MAX_CHNAME_LEN) 223*0Sstevel@tonic-gate return (EINVAL); 224*0Sstevel@tonic-gate 225*0Sstevel@tonic-gate chan_name = kmem_alloc(uargs.chan_name.len, KM_SLEEP); 226*0Sstevel@tonic-gate 227*0Sstevel@tonic-gate if (copyin((void *)(uintptr_t)uargs.chan_name.name, chan_name, 228*0Sstevel@tonic-gate uargs.chan_name.len) != 0) { 229*0Sstevel@tonic-gate kmem_free(chan_name, uargs.chan_name.len); 230*0Sstevel@tonic-gate return (EFAULT); 231*0Sstevel@tonic-gate } 232*0Sstevel@tonic-gate 233*0Sstevel@tonic-gate if (!sysevent_isstrend(chan_name, uargs.chan_name.len)) { 234*0Sstevel@tonic-gate kmem_free(chan_name, uargs.chan_name.len); 235*0Sstevel@tonic-gate return (EINVAL); 236*0Sstevel@tonic-gate } 237*0Sstevel@tonic-gate 238*0Sstevel@tonic-gate /* 239*0Sstevel@tonic-gate * Check of uargs.flags and uargs.perms just to avoid DoS attacks. 240*0Sstevel@tonic-gate * libsysevent does this carefully 241*0Sstevel@tonic-gate */ 242*0Sstevel@tonic-gate ctl->chp = evch_usrchanopen((const char *)chan_name, 243*0Sstevel@tonic-gate uargs.flags & EVCH_B_FLAGS, &ec); 244*0Sstevel@tonic-gate 245*0Sstevel@tonic-gate kmem_free(chan_name, uargs.chan_name.len); 246*0Sstevel@tonic-gate 247*0Sstevel@tonic-gate if (ec != 0) { 248*0Sstevel@tonic-gate return (ec); 249*0Sstevel@tonic-gate } 250*0Sstevel@tonic-gate 251*0Sstevel@tonic-gate return (0); 252*0Sstevel@tonic-gate } 253*0Sstevel@tonic-gate 254*0Sstevel@tonic-gate /* ARGSUSED */ 255*0Sstevel@tonic-gate static int 256*0Sstevel@tonic-gate sysevent_chan_control(dev_t dev, int *rvalp, void *arg, int flag, cred_t *cr) 257*0Sstevel@tonic-gate { 258*0Sstevel@tonic-gate sev_control_args_t uargs; 259*0Sstevel@tonic-gate evchan_ctl_t *ctl; 260*0Sstevel@tonic-gate int rc; 261*0Sstevel@tonic-gate 262*0Sstevel@tonic-gate ctl = ddi_get_soft_state(evchan_ctlp, getminor(dev)); 263*0Sstevel@tonic-gate if (ctl == NULL || ctl->chp == NULL) 264*0Sstevel@tonic-gate return (ENXIO); 265*0Sstevel@tonic-gate 266*0Sstevel@tonic-gate if (copyin(arg, &uargs, sizeof (sev_control_args_t)) != 0) 267*0Sstevel@tonic-gate return (EFAULT); 268*0Sstevel@tonic-gate 269*0Sstevel@tonic-gate switch (uargs.cmd) { 270*0Sstevel@tonic-gate case EVCH_GET_CHAN_LEN: 271*0Sstevel@tonic-gate case EVCH_GET_CHAN_LEN_MAX: 272*0Sstevel@tonic-gate rc = evch_usrcontrol_get(ctl->chp, uargs.cmd, &uargs.value); 273*0Sstevel@tonic-gate if (rc == 0) { 274*0Sstevel@tonic-gate if (copyout((void *)&uargs, arg, 275*0Sstevel@tonic-gate sizeof (sev_control_args_t)) != 0) { 276*0Sstevel@tonic-gate rc = EFAULT; 277*0Sstevel@tonic-gate } 278*0Sstevel@tonic-gate } 279*0Sstevel@tonic-gate break; 280*0Sstevel@tonic-gate case EVCH_SET_CHAN_LEN: 281*0Sstevel@tonic-gate rc = evch_usrcontrol_set(ctl->chp, uargs.cmd, uargs.value); 282*0Sstevel@tonic-gate break; 283*0Sstevel@tonic-gate default: 284*0Sstevel@tonic-gate rc = EINVAL; 285*0Sstevel@tonic-gate } 286*0Sstevel@tonic-gate return (rc); 287*0Sstevel@tonic-gate } 288*0Sstevel@tonic-gate 289*0Sstevel@tonic-gate /* ARGSUSED */ 290*0Sstevel@tonic-gate static int 291*0Sstevel@tonic-gate sysevent_subscribe(dev_t dev, int *rvalp, void *arg, int flag, cred_t *cr) 292*0Sstevel@tonic-gate { 293*0Sstevel@tonic-gate sev_subscribe_args_t uargs; 294*0Sstevel@tonic-gate char *sid; 295*0Sstevel@tonic-gate char *class_info = NULL; 296*0Sstevel@tonic-gate evchan_ctl_t *ctl; 297*0Sstevel@tonic-gate int rc; 298*0Sstevel@tonic-gate 299*0Sstevel@tonic-gate ctl = ddi_get_soft_state(evchan_ctlp, getminor(dev)); 300*0Sstevel@tonic-gate if (ctl == NULL || ctl->chp == NULL) 301*0Sstevel@tonic-gate return (ENXIO); 302*0Sstevel@tonic-gate 303*0Sstevel@tonic-gate if (copyin(arg, &uargs, sizeof (sev_subscribe_args_t)) != 0) 304*0Sstevel@tonic-gate return (EFAULT); 305*0Sstevel@tonic-gate 306*0Sstevel@tonic-gate if (uargs.sid.len > MAX_SUBID_LEN || 307*0Sstevel@tonic-gate uargs.class_info.len > MAX_CLASS_LEN) 308*0Sstevel@tonic-gate return (EINVAL); 309*0Sstevel@tonic-gate 310*0Sstevel@tonic-gate sid = kmem_alloc(uargs.sid.len, KM_SLEEP); 311*0Sstevel@tonic-gate if (copyin((void *)(uintptr_t)uargs.sid.name, 312*0Sstevel@tonic-gate sid, uargs.sid.len) != 0) { 313*0Sstevel@tonic-gate kmem_free(sid, uargs.sid.len); 314*0Sstevel@tonic-gate return (EFAULT); 315*0Sstevel@tonic-gate } 316*0Sstevel@tonic-gate if (!sysevent_isstrend(sid, uargs.sid.len)) { 317*0Sstevel@tonic-gate kmem_free(sid, uargs.sid.len); 318*0Sstevel@tonic-gate return (EINVAL); 319*0Sstevel@tonic-gate } 320*0Sstevel@tonic-gate 321*0Sstevel@tonic-gate /* If class string empty then class EC_ALL is assumed */ 322*0Sstevel@tonic-gate if (uargs.class_info.len != 0) { 323*0Sstevel@tonic-gate class_info = kmem_alloc(uargs.class_info.len, KM_SLEEP); 324*0Sstevel@tonic-gate if (copyin((void *)(uintptr_t)uargs.class_info.name, class_info, 325*0Sstevel@tonic-gate uargs.class_info.len) != 0) { 326*0Sstevel@tonic-gate kmem_free(class_info, uargs.class_info.len); 327*0Sstevel@tonic-gate kmem_free(sid, uargs.sid.len); 328*0Sstevel@tonic-gate return (EFAULT); 329*0Sstevel@tonic-gate } 330*0Sstevel@tonic-gate if (!sysevent_isstrend(class_info, uargs.class_info.len)) { 331*0Sstevel@tonic-gate kmem_free(class_info, uargs.class_info.len); 332*0Sstevel@tonic-gate kmem_free(sid, uargs.sid.len); 333*0Sstevel@tonic-gate return (EINVAL); 334*0Sstevel@tonic-gate } 335*0Sstevel@tonic-gate } 336*0Sstevel@tonic-gate 337*0Sstevel@tonic-gate /* 338*0Sstevel@tonic-gate * Check of uargs.flags just to avoid DoS attacks 339*0Sstevel@tonic-gate * libsysevent does this carefully. 340*0Sstevel@tonic-gate */ 341*0Sstevel@tonic-gate rc = evch_usrsubscribe(ctl->chp, sid, class_info, 342*0Sstevel@tonic-gate (int)uargs.door_desc, uargs.flags); 343*0Sstevel@tonic-gate 344*0Sstevel@tonic-gate kmem_free(class_info, uargs.class_info.len); 345*0Sstevel@tonic-gate kmem_free(sid, uargs.sid.len); 346*0Sstevel@tonic-gate 347*0Sstevel@tonic-gate return (rc); 348*0Sstevel@tonic-gate } 349*0Sstevel@tonic-gate 350*0Sstevel@tonic-gate /* ARGSUSED */ 351*0Sstevel@tonic-gate static int 352*0Sstevel@tonic-gate sysevent_unsubscribe(dev_t dev, int *rvalp, void *arg, int flag, cred_t *cr) 353*0Sstevel@tonic-gate { 354*0Sstevel@tonic-gate sev_unsubscribe_args_t uargs; 355*0Sstevel@tonic-gate char *sid; 356*0Sstevel@tonic-gate evchan_ctl_t *ctl; 357*0Sstevel@tonic-gate 358*0Sstevel@tonic-gate if (copyin(arg, &uargs, sizeof (sev_unsubscribe_args_t)) != 0) 359*0Sstevel@tonic-gate return (EFAULT); 360*0Sstevel@tonic-gate 361*0Sstevel@tonic-gate ctl = ddi_get_soft_state(evchan_ctlp, getminor(dev)); 362*0Sstevel@tonic-gate if (ctl == NULL || ctl->chp == NULL) 363*0Sstevel@tonic-gate return (ENXIO); 364*0Sstevel@tonic-gate 365*0Sstevel@tonic-gate if (uargs.sid.len > MAX_SUBID_LEN) 366*0Sstevel@tonic-gate return (EINVAL); 367*0Sstevel@tonic-gate 368*0Sstevel@tonic-gate /* Unsubscribe for all */ 369*0Sstevel@tonic-gate if (uargs.sid.len == 0) { 370*0Sstevel@tonic-gate evch_usrunsubscribe(ctl->chp, NULL, 0); 371*0Sstevel@tonic-gate return (0); 372*0Sstevel@tonic-gate } 373*0Sstevel@tonic-gate 374*0Sstevel@tonic-gate sid = kmem_alloc(uargs.sid.len, KM_SLEEP); 375*0Sstevel@tonic-gate 376*0Sstevel@tonic-gate if (copyin((void *)(uintptr_t)uargs.sid.name, 377*0Sstevel@tonic-gate sid, uargs.sid.len) != 0) { 378*0Sstevel@tonic-gate kmem_free(sid, uargs.sid.len); 379*0Sstevel@tonic-gate return (EFAULT); 380*0Sstevel@tonic-gate } 381*0Sstevel@tonic-gate 382*0Sstevel@tonic-gate evch_usrunsubscribe(ctl->chp, sid, 0); 383*0Sstevel@tonic-gate 384*0Sstevel@tonic-gate kmem_free(sid, uargs.sid.len); 385*0Sstevel@tonic-gate 386*0Sstevel@tonic-gate return (0); 387*0Sstevel@tonic-gate } 388*0Sstevel@tonic-gate 389*0Sstevel@tonic-gate /* ARGSUSED */ 390*0Sstevel@tonic-gate static int 391*0Sstevel@tonic-gate sysevent_channames(dev_t dev, int *rvalp, void *arg, int flag, cred_t *cr) 392*0Sstevel@tonic-gate { 393*0Sstevel@tonic-gate sev_chandata_args_t uargs; 394*0Sstevel@tonic-gate char *buf; 395*0Sstevel@tonic-gate int len; 396*0Sstevel@tonic-gate int rc = 0; 397*0Sstevel@tonic-gate 398*0Sstevel@tonic-gate if (copyin(arg, &uargs, sizeof (sev_chandata_args_t)) != 0) 399*0Sstevel@tonic-gate return (EFAULT); 400*0Sstevel@tonic-gate 401*0Sstevel@tonic-gate if (uargs.out_data.len == 0 || uargs.out_data.len > EVCH_MAX_DATA_SIZE) 402*0Sstevel@tonic-gate return (EINVAL); 403*0Sstevel@tonic-gate 404*0Sstevel@tonic-gate buf = kmem_alloc(uargs.out_data.len, KM_SLEEP); 405*0Sstevel@tonic-gate 406*0Sstevel@tonic-gate if ((len = evch_usrgetchnames(buf, uargs.out_data.len)) == -1) { 407*0Sstevel@tonic-gate rc = EOVERFLOW; 408*0Sstevel@tonic-gate } 409*0Sstevel@tonic-gate 410*0Sstevel@tonic-gate if (rc == 0) { 411*0Sstevel@tonic-gate ASSERT(len <= uargs.out_data.len); 412*0Sstevel@tonic-gate if (copyout(buf, 413*0Sstevel@tonic-gate (void *)(uintptr_t)uargs.out_data.name, len) != 0) { 414*0Sstevel@tonic-gate rc = EFAULT; 415*0Sstevel@tonic-gate } 416*0Sstevel@tonic-gate } 417*0Sstevel@tonic-gate 418*0Sstevel@tonic-gate kmem_free(buf, uargs.out_data.len); 419*0Sstevel@tonic-gate 420*0Sstevel@tonic-gate return (rc); 421*0Sstevel@tonic-gate } 422*0Sstevel@tonic-gate 423*0Sstevel@tonic-gate /* ARGSUSED */ 424*0Sstevel@tonic-gate static int 425*0Sstevel@tonic-gate sysevent_chandata(dev_t dev, int *rvalp, void *arg, int flag, cred_t *cr) 426*0Sstevel@tonic-gate { 427*0Sstevel@tonic-gate sev_chandata_args_t uargs; 428*0Sstevel@tonic-gate char *channel; 429*0Sstevel@tonic-gate char *buf; 430*0Sstevel@tonic-gate int len; 431*0Sstevel@tonic-gate int rc = 0; 432*0Sstevel@tonic-gate 433*0Sstevel@tonic-gate if (copyin(arg, &uargs, sizeof (sev_chandata_args_t)) != 0) 434*0Sstevel@tonic-gate return (EFAULT); 435*0Sstevel@tonic-gate 436*0Sstevel@tonic-gate if (uargs.in_data.len > MAX_CHNAME_LEN || 437*0Sstevel@tonic-gate uargs.out_data.len > EVCH_MAX_DATA_SIZE) 438*0Sstevel@tonic-gate return (EINVAL); 439*0Sstevel@tonic-gate 440*0Sstevel@tonic-gate channel = kmem_alloc(uargs.in_data.len, KM_SLEEP); 441*0Sstevel@tonic-gate 442*0Sstevel@tonic-gate if (copyin((void *)(uintptr_t)uargs.in_data.name, channel, 443*0Sstevel@tonic-gate uargs.in_data.len) != 0) { 444*0Sstevel@tonic-gate kmem_free(channel, uargs.in_data.len); 445*0Sstevel@tonic-gate return (EFAULT); 446*0Sstevel@tonic-gate } 447*0Sstevel@tonic-gate 448*0Sstevel@tonic-gate if (!sysevent_isstrend(channel, uargs.in_data.len)) { 449*0Sstevel@tonic-gate kmem_free(channel, uargs.in_data.len); 450*0Sstevel@tonic-gate return (EINVAL); 451*0Sstevel@tonic-gate } 452*0Sstevel@tonic-gate 453*0Sstevel@tonic-gate buf = kmem_alloc(uargs.out_data.len, KM_SLEEP); 454*0Sstevel@tonic-gate 455*0Sstevel@tonic-gate len = evch_usrgetchdata(channel, buf, uargs.out_data.len); 456*0Sstevel@tonic-gate if (len == 0) { 457*0Sstevel@tonic-gate rc = EOVERFLOW; 458*0Sstevel@tonic-gate } else if (len == -1) { 459*0Sstevel@tonic-gate rc = ENOENT; 460*0Sstevel@tonic-gate } 461*0Sstevel@tonic-gate 462*0Sstevel@tonic-gate if (rc == 0) { 463*0Sstevel@tonic-gate ASSERT(len <= uargs.out_data.len); 464*0Sstevel@tonic-gate if (copyout(buf, 465*0Sstevel@tonic-gate (void *)(uintptr_t)uargs.out_data.name, len) != 0) { 466*0Sstevel@tonic-gate rc = EFAULT; 467*0Sstevel@tonic-gate } 468*0Sstevel@tonic-gate } 469*0Sstevel@tonic-gate 470*0Sstevel@tonic-gate kmem_free(buf, uargs.out_data.len); 471*0Sstevel@tonic-gate kmem_free(channel, uargs.in_data.len); 472*0Sstevel@tonic-gate 473*0Sstevel@tonic-gate return (rc); 474*0Sstevel@tonic-gate } 475*0Sstevel@tonic-gate 476*0Sstevel@tonic-gate /*ARGSUSED*/ 477*0Sstevel@tonic-gate static int 478*0Sstevel@tonic-gate sysevent_ioctl(dev_t dev, int cmd, intptr_t arg, 479*0Sstevel@tonic-gate int flag, cred_t *cr, int *rvalp) 480*0Sstevel@tonic-gate { 481*0Sstevel@tonic-gate int rc; 482*0Sstevel@tonic-gate 483*0Sstevel@tonic-gate switch (cmd) { 484*0Sstevel@tonic-gate case SEV_PUBLISH: 485*0Sstevel@tonic-gate rc = sysevent_publish(dev, rvalp, (void *)arg, flag, cr); 486*0Sstevel@tonic-gate break; 487*0Sstevel@tonic-gate case SEV_CHAN_OPEN: 488*0Sstevel@tonic-gate rc = sysevent_chan_open(dev, rvalp, (void *)arg, flag, cr); 489*0Sstevel@tonic-gate break; 490*0Sstevel@tonic-gate case SEV_CHAN_CONTROL: 491*0Sstevel@tonic-gate rc = sysevent_chan_control(dev, rvalp, (void *)arg, flag, cr); 492*0Sstevel@tonic-gate break; 493*0Sstevel@tonic-gate case SEV_SUBSCRIBE: 494*0Sstevel@tonic-gate rc = sysevent_subscribe(dev, rvalp, (void *)arg, flag, cr); 495*0Sstevel@tonic-gate break; 496*0Sstevel@tonic-gate case SEV_UNSUBSCRIBE: 497*0Sstevel@tonic-gate rc = sysevent_unsubscribe(dev, rvalp, (void *)arg, flag, cr); 498*0Sstevel@tonic-gate break; 499*0Sstevel@tonic-gate case SEV_CHANNAMES: 500*0Sstevel@tonic-gate rc = sysevent_channames(dev, rvalp, (void *)arg, flag, cr); 501*0Sstevel@tonic-gate break; 502*0Sstevel@tonic-gate case SEV_CHANDATA: 503*0Sstevel@tonic-gate rc = sysevent_chandata(dev, rvalp, (void *)arg, flag, cr); 504*0Sstevel@tonic-gate break; 505*0Sstevel@tonic-gate default: 506*0Sstevel@tonic-gate rc = EINVAL; 507*0Sstevel@tonic-gate } 508*0Sstevel@tonic-gate 509*0Sstevel@tonic-gate return (rc); 510*0Sstevel@tonic-gate } 511*0Sstevel@tonic-gate 512*0Sstevel@tonic-gate /*ARGSUSED*/ 513*0Sstevel@tonic-gate static int 514*0Sstevel@tonic-gate sysevent_open(dev_t *devp, int flag, int otyp, cred_t *cr) 515*0Sstevel@tonic-gate { 516*0Sstevel@tonic-gate int minor; 517*0Sstevel@tonic-gate 518*0Sstevel@tonic-gate if (otyp != OTYP_CHR) 519*0Sstevel@tonic-gate return (EINVAL); 520*0Sstevel@tonic-gate 521*0Sstevel@tonic-gate if (getminor(*devp) != 0) 522*0Sstevel@tonic-gate return (ENXIO); 523*0Sstevel@tonic-gate 524*0Sstevel@tonic-gate minor = sysevent_minor_get(); 525*0Sstevel@tonic-gate if (minor == 0) 526*0Sstevel@tonic-gate /* All minors are busy */ 527*0Sstevel@tonic-gate return (EBUSY); 528*0Sstevel@tonic-gate 529*0Sstevel@tonic-gate if (ddi_soft_state_zalloc(evchan_ctlp, minor) 530*0Sstevel@tonic-gate != DDI_SUCCESS) { 531*0Sstevel@tonic-gate sysevent_minor_rele(minor); 532*0Sstevel@tonic-gate return (ENOMEM); 533*0Sstevel@tonic-gate } 534*0Sstevel@tonic-gate 535*0Sstevel@tonic-gate *devp = makedevice(getmajor(*devp), minor); 536*0Sstevel@tonic-gate 537*0Sstevel@tonic-gate return (0); 538*0Sstevel@tonic-gate } 539*0Sstevel@tonic-gate 540*0Sstevel@tonic-gate /*ARGSUSED*/ 541*0Sstevel@tonic-gate static int 542*0Sstevel@tonic-gate sysevent_close(dev_t dev, int flag, int otyp, cred_t *cr) 543*0Sstevel@tonic-gate { 544*0Sstevel@tonic-gate int minor = (int)getminor(dev); 545*0Sstevel@tonic-gate evchan_ctl_t *ctl; 546*0Sstevel@tonic-gate 547*0Sstevel@tonic-gate if (otyp != OTYP_CHR) 548*0Sstevel@tonic-gate return (EINVAL); 549*0Sstevel@tonic-gate 550*0Sstevel@tonic-gate ctl = ddi_get_soft_state(evchan_ctlp, minor); 551*0Sstevel@tonic-gate if (ctl == NULL) { 552*0Sstevel@tonic-gate return (ENXIO); 553*0Sstevel@tonic-gate } 554*0Sstevel@tonic-gate 555*0Sstevel@tonic-gate if (ctl->chp) { 556*0Sstevel@tonic-gate /* Release all non-persistant subscriptions */ 557*0Sstevel@tonic-gate evch_usrunsubscribe(ctl->chp, NULL, EVCH_SUB_KEEP); 558*0Sstevel@tonic-gate evch_usrchanclose(ctl->chp); 559*0Sstevel@tonic-gate } 560*0Sstevel@tonic-gate 561*0Sstevel@tonic-gate ddi_soft_state_free(evchan_ctlp, minor); 562*0Sstevel@tonic-gate sysevent_minor_rele(minor); 563*0Sstevel@tonic-gate 564*0Sstevel@tonic-gate return (0); 565*0Sstevel@tonic-gate } 566*0Sstevel@tonic-gate 567*0Sstevel@tonic-gate /* ARGSUSED */ 568*0Sstevel@tonic-gate static int 569*0Sstevel@tonic-gate sysevent_info(dev_info_t *dip, ddi_info_cmd_t infocmd, 570*0Sstevel@tonic-gate void *arg, void **result) 571*0Sstevel@tonic-gate { 572*0Sstevel@tonic-gate switch (infocmd) { 573*0Sstevel@tonic-gate case DDI_INFO_DEVT2DEVINFO: 574*0Sstevel@tonic-gate *result = sysevent_devi; 575*0Sstevel@tonic-gate return (DDI_SUCCESS); 576*0Sstevel@tonic-gate case DDI_INFO_DEVT2INSTANCE: 577*0Sstevel@tonic-gate *result = 0; 578*0Sstevel@tonic-gate return (DDI_SUCCESS); 579*0Sstevel@tonic-gate } 580*0Sstevel@tonic-gate return (DDI_FAILURE); 581*0Sstevel@tonic-gate } 582*0Sstevel@tonic-gate 583*0Sstevel@tonic-gate /* ARGSUSED */ 584*0Sstevel@tonic-gate static int 585*0Sstevel@tonic-gate sysevent_attach(dev_info_t *devi, ddi_attach_cmd_t cmd) 586*0Sstevel@tonic-gate { 587*0Sstevel@tonic-gate 588*0Sstevel@tonic-gate if (cmd != DDI_ATTACH) { 589*0Sstevel@tonic-gate return (DDI_FAILURE); 590*0Sstevel@tonic-gate } 591*0Sstevel@tonic-gate 592*0Sstevel@tonic-gate if (ddi_create_minor_node(devi, "sysevent", S_IFCHR, 593*0Sstevel@tonic-gate 0, DDI_PSEUDO, NULL) == DDI_FAILURE) { 594*0Sstevel@tonic-gate ddi_remove_minor_node(devi, NULL); 595*0Sstevel@tonic-gate return (DDI_FAILURE); 596*0Sstevel@tonic-gate } 597*0Sstevel@tonic-gate sysevent_devi = devi; 598*0Sstevel@tonic-gate 599*0Sstevel@tonic-gate sysevent_minor_init(); 600*0Sstevel@tonic-gate 601*0Sstevel@tonic-gate return (DDI_SUCCESS); 602*0Sstevel@tonic-gate } 603*0Sstevel@tonic-gate 604*0Sstevel@tonic-gate static int 605*0Sstevel@tonic-gate sysevent_detach(dev_info_t *devi, ddi_detach_cmd_t cmd) 606*0Sstevel@tonic-gate { 607*0Sstevel@tonic-gate if (cmd != DDI_DETACH) { 608*0Sstevel@tonic-gate return (DDI_FAILURE); 609*0Sstevel@tonic-gate } 610*0Sstevel@tonic-gate 611*0Sstevel@tonic-gate sysevent_minor_free(sysevent_minor_bitmap); 612*0Sstevel@tonic-gate ddi_remove_minor_node(devi, NULL); 613*0Sstevel@tonic-gate return (DDI_SUCCESS); 614*0Sstevel@tonic-gate } 615*0Sstevel@tonic-gate 616*0Sstevel@tonic-gate static struct cb_ops sysevent_cb_ops = { 617*0Sstevel@tonic-gate sysevent_open, /* open */ 618*0Sstevel@tonic-gate sysevent_close, /* close */ 619*0Sstevel@tonic-gate nodev, /* strategy */ 620*0Sstevel@tonic-gate nodev, /* print */ 621*0Sstevel@tonic-gate nodev, /* dump */ 622*0Sstevel@tonic-gate nodev, /* read */ 623*0Sstevel@tonic-gate nodev, /* write */ 624*0Sstevel@tonic-gate sysevent_ioctl, /* ioctl */ 625*0Sstevel@tonic-gate nodev, /* devmap */ 626*0Sstevel@tonic-gate nodev, /* mmap */ 627*0Sstevel@tonic-gate nodev, /* segmap */ 628*0Sstevel@tonic-gate nochpoll, /* poll */ 629*0Sstevel@tonic-gate ddi_prop_op, /* prop_op */ 630*0Sstevel@tonic-gate 0, /* streamtab */ 631*0Sstevel@tonic-gate D_NEW|D_MP, /* flag */ 632*0Sstevel@tonic-gate NULL, /* aread */ 633*0Sstevel@tonic-gate NULL /* awrite */ 634*0Sstevel@tonic-gate }; 635*0Sstevel@tonic-gate 636*0Sstevel@tonic-gate static struct dev_ops sysevent_ops = { 637*0Sstevel@tonic-gate DEVO_REV, /* devo_rev */ 638*0Sstevel@tonic-gate 0, /* refcnt */ 639*0Sstevel@tonic-gate sysevent_info, /* info */ 640*0Sstevel@tonic-gate nulldev, /* identify */ 641*0Sstevel@tonic-gate nulldev, /* probe */ 642*0Sstevel@tonic-gate sysevent_attach, /* attach */ 643*0Sstevel@tonic-gate sysevent_detach, /* detach */ 644*0Sstevel@tonic-gate nodev, /* reset */ 645*0Sstevel@tonic-gate &sysevent_cb_ops, /* driver operations */ 646*0Sstevel@tonic-gate (struct bus_ops *)0, /* no bus operations */ 647*0Sstevel@tonic-gate nulldev /* power */ 648*0Sstevel@tonic-gate }; 649*0Sstevel@tonic-gate 650*0Sstevel@tonic-gate static struct modldrv modldrv = { 651*0Sstevel@tonic-gate &mod_driverops, "sysevent driver %I%", &sysevent_ops 652*0Sstevel@tonic-gate }; 653*0Sstevel@tonic-gate 654*0Sstevel@tonic-gate static struct modlinkage modlinkage = { 655*0Sstevel@tonic-gate MODREV_1, &modldrv, NULL 656*0Sstevel@tonic-gate }; 657*0Sstevel@tonic-gate 658*0Sstevel@tonic-gate int 659*0Sstevel@tonic-gate _init(void) 660*0Sstevel@tonic-gate { 661*0Sstevel@tonic-gate int s; 662*0Sstevel@tonic-gate 663*0Sstevel@tonic-gate s = ddi_soft_state_init(&evchan_ctlp, sizeof (evchan_ctl_t), 1); 664*0Sstevel@tonic-gate if (s != 0) 665*0Sstevel@tonic-gate return (s); 666*0Sstevel@tonic-gate 667*0Sstevel@tonic-gate if ((s = mod_install(&modlinkage)) != 0) 668*0Sstevel@tonic-gate ddi_soft_state_fini(&evchan_ctlp); 669*0Sstevel@tonic-gate return (s); 670*0Sstevel@tonic-gate } 671*0Sstevel@tonic-gate 672*0Sstevel@tonic-gate int 673*0Sstevel@tonic-gate _fini(void) 674*0Sstevel@tonic-gate { 675*0Sstevel@tonic-gate int s; 676*0Sstevel@tonic-gate 677*0Sstevel@tonic-gate if ((s = mod_remove(&modlinkage)) != 0) 678*0Sstevel@tonic-gate return (s); 679*0Sstevel@tonic-gate 680*0Sstevel@tonic-gate ddi_soft_state_fini(&evchan_ctlp); 681*0Sstevel@tonic-gate return (s); 682*0Sstevel@tonic-gate } 683*0Sstevel@tonic-gate 684*0Sstevel@tonic-gate int 685*0Sstevel@tonic-gate _info(struct modinfo *modinfop) 686*0Sstevel@tonic-gate { 687*0Sstevel@tonic-gate return (mod_info(&modlinkage, modinfop)); 688*0Sstevel@tonic-gate } 689